Office: SCA 328
Lab: SCA 337, SCA 101
|Specialty Area||Recent Publications|
|Ecosystem Ecology and Biogeochemistry||David Lewis|
PhD, University of Wisconsin-Madison, Limnology and Marine Science, 2000
MS, University of Wisconsin-Madison, Oceanography and Limnology, 1996
BA, University of Kansas, Biology, 1994
I study the transport and transformation, in the biosphere, of carbon (C), nitrogen (N), and other ecologically important elements. I investigate how land management, hydrology, and biology influence the load and concentration of various molecular forms of these elements in surface waters and groundwater. My studies also test the hypotheses that soil C and N immobilization in stable and labile (easily mineralized) pools respond to contemporary and historic land management, and to ecosystem successional status and species composition. This understanding is important because immobilization in stable pools regulates land-water and land-atmosphere exchanges of these elements. My research is informed by the ecological principles of scale, legacies, landscape position, and disequilibrium. I also have a background in community ecology, and remain interested in understanding factors that regulate biodiversity and mediate species interactions. My research habitats grade from relatively unmanaged to intensively human-dominated, and my colleagues and I are beginning a new program to study the social drivers and ecological outcomes of water redistribution.